77945044 has 12 divisors (see below), whose sum is σ = 137728864. Its totient is φ = 38593944.

The previous prime is 77944969. The next prime is 77945081. The reversal of 77945044 is 44054977.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 77944988 and 77945006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94182 + ... + 95005.

Almost surely, 2^77945044 is an apocalyptic number.

It is an amenable number.

77945044 is a deficient number, since it is larger than the sum of its proper divisors (59783820).

77945044 is a wasteful number, since it uses less digits than its factorization.

77945044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189294 (or 189292 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 77945044 is about 8828.6490472778. The cubic root of 77945044 is about 427.1654991963.

The spelling of 77945044 in words is "seventy-seven million, nine hundred forty-five thousand, forty-four".